Design of low drag reactive silencers based on the bound states in the continuum

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F23%3A00371703" target="_blank" >RIV/68407700:21230/23:00371703 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.61782/fa.2023.0834" target="_blank" >https://doi.org/10.61782/fa.2023.0834</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.61782/fa.2023.0834" target="_blank" >10.61782/fa.2023.0834</a>

Result language
angličtina
Original language name
Design of low drag reactive silencers based on the bound states in the continuum
Original language description
The phenomenon of bound states in the continuum and leaky resonances is employed to design a reactive silencer. It is targeted to prevent a significant spectral line from propagating in a flow-duct while maintaining low pressure drop and installation space (without any lateral extensions). The quasi bound states are achieved by tuning the geometrical parameters of thin plates embedded in a waveguide with dimensions and flow velocities typical for ventilation systems. In general, the procedure works for waveguides with plane wave propagation in the low Mach number regime. An optimization by evolution strategies used for this purpose is described and illustrated on two specific examples.
Czech name
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Czech description
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Project
<a href="/en/project/GA22-33896S" target="_blank" >GA22-33896S: Advanced methods of sound and elastic wave field control: acoustic black holes, metamaterials and functionally graded materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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